Pythagoras' Invention of the Pythagorean Theorem

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Around Two thousand five hundred years ago, a Greek mathematician, Pythagoras, invented the Pythagorean Theorem. The Theorem was related to the length of each side of a right-angled triangle. In a right-angled triangle, the square on the hypotenuse, the side opposite to the right angle, equals to the sum of the squares on the other two sides. (148, Poskitt) To know more about this famous theorem, we can look at the other forms of the Pythagorean Theorem, such as it can also be written as c^2-a^2=b^2 which is for reverse operations like finding side b with the data of a and c. Meanwhile, the proofs of the theorem can make us understand more about the invention of the theorem and how Pythagoras figured it out. And with the invention of this theorem, we shall look into where this theorem was used in these days and how important it is.

Pythagoras was a Greek mathematician born nearly two thousand and sixty years ago. He loved maths when he was very young and spent his whole time investigating maths. He found that “In a right-angled triangle, the square on the hypotenuse, the side opposite to the right angle, equals to the sum of the squares on the other two sides.” (148, Poskitt)
He proved that all right-angled triangles worked with this theorem

c a a^2+b^2=c^2

b
To calculate the length of the hypotenuse, we can simply square each of the perpendicular sides a and b and add them together. Afterwards, we have to root the answer (√c), which is the reverse of square. That means, the theorem can also be written as√(〖(a〗^2+b^2 ))=c. This equation means you first add the square of a" and " b, root it, then it would equal c, which is exactly the same as the original form of the theorem.

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...d triangle. It is an equation a^2+b^2=c^2 but also can be turned into different forms like √(〖(a〗^2+b^2 ))=c or even take a^2 and write as b^2=c^2-a^2. With the algebraic equations the length of each side of an right-angled triangle can easily be calculated. Meanwhile, there are a lot of ways to proof the Pythagorean Theorem, they were all invented by different mathematicians aroung the world at different time, and can proof the theorem using squares, rectangles, trapezium, circles and much more shapes. There are over three hundred proofs currently. With all these different proofs we can believe that the theorem is most likely correct. Moreover, the Pythagorean Theorem can help architects and contruction workers, or even geologists in different ways to help their calculations be easier. The Pythagorean Theorem is very important on the whole in the mathematics world.

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